Saw-sharpening gage



(No Model.)

L. N. TORRENCE 8v R. T. REID.

SAW SHARPENING GAGE.

Patented Oct. 9

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1 NITED STATES PATENT FFIC.

:envi n. ronnnncn Ann ROYAL rr. REID, or snnwnnnrown, MISSOURI.

SAW-SHARPENING GAGE,

kSPECIIFICATION' forming part of Letters Patent No. 286,348, dated October 9, 1883.

Application led April 27, 1883. (No model.) f

of simplicity, inexpensiveness, durability, and.

general efficiency. Y

In the drawings, Figure l is a perspective view `oi` our improved gage in position on the saw. Fig. 2 is a longitudinal sectional View of the saine. Fig. 3 is a transverse sectional view taken through the adjusting-screws.

Referring to the drawings, A designates a saddle-block, which is provided with a longitudinal groove or kerf," B, in its under edge, which groove opens into a depression or recess, C, in the top edge of the said block. In this recess C are arranged two inverted-U- shaped bridges or arches, D D, which straddle the groove B near each end of the said recess, and have their side stems, E E, extend into perforations or holes F F, formed through the block A. The bridge-pieces are vertically adinstable in these perforations F F by means of set screws G, which work through screwthreaded perforations H in the sides of block A and come against the stems EE, as shown. In eachbridge-piece D is provided a bearing at each side the slot or kerf B, as shown at II, for rollers J J, longitudinally disposed and parallel with the said kerfB, one roller being at each side the latter and having its ends bearing in the two bridge-pieces. If desired, a set-screw may be arranged to work through the block and against the saw, to secure the saddle-block in position on the latter.

The operation and advantages of our invention are obvious. Thesawis inserted in the kerf B, as shown, so that the teeth will come up between the rollers. The bridge pieces carrying the rollers are now adjusted vertically, according to the depth of teeth it is desired to have, and secured by the setu screws, when the rile isbrought into use and passes over the said guide-rollers, which will turn and not damage the file in any way,while they serve as a support for the same.

By the use of this device the length or size of the teeth can be readily regulated.

The bridge-pieces can be easily adjusted or removed.

/Ve claim as our invention- The combination of the saddle-block having the kerf or groove in its under edge, and the recess or depression iii its top edge, transverse bridge-pieces arranged in the said recess, and vertically adjustable in the same, yand rollers r disposed longitudinally on each side the said 6 5 groove or kerf, andhaving their bearings in the adjustable bridge-pieces, as set forth.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures 'in presence of two witnesses.

Lnvr n. fronnnncn. normJ rr. ann).

4 Witnesses:

J. R. LrrrELL, WM. Bricenn. 

